Biolamina Ab

Other

Biostratum, Inc.

National University of Singapore

Singapore Health Services Pte Ltd

Athena Diagnostics, Inc.

Biostratum Incorporation

Rodin, Sergey

Tryggvason, Karl

Domogatskaya, Anna

Salo, Sirpa Anne Kristiina

Karl Kristian Tryggvason

Sergey Rodin

Anna Domogatskaya

Olavi Lukkarinen

Outi Hovatta

Kristian Tryggvason

Marjo Kestila

Ulla Lenkkeri

Teija Parpala

Minna Mannikko

Charles Pyke

Pekka Kallunki

Pirkko Heikkil&auml;

Karl Tryggvason

Sun Yi

Yan Wen Yap

Tarja Parpala

Jarrko Kortesmaa

Sirkka L Hostikka

Jing Zhou

Pirkko Heikkila

Alvin Wen Choong Chua

Monica Suryana Tjin

Masayuki Doi

Sirpa Anne Kristiina Salo

Jill Thyboll

The present disclosure describes methods of maintaining the phenotype of differentiated cells. Generally, the natural environment of the body is replicated for the differentiated cell. The differentiated cell is plated on a cell culture substrate comprising a laminin, such as laminin-521 or laminin-511. The substrate may also contain a cadherin. This maintains the phenotype of the differentiated cell.

Maintenance of differentiated cells with laminins

The present disclosure relates to the use of laminin-521 in obtaining retinal pigment epithelium (RPE) cells. Pluripotent human embryonic stem cells are cultured on plates coated with recombinant laminin-521 (laminin-11), in totally defined and xeno-free conditions. A first cell culture medium contains a growth factor, and a second cell culture medium does not contain growth factor. The stem cells are first exposed to the first cell culture medium, then exposed to the second cell culture medium for a longer time period. After a number of weeks, clinical grade RPE cells are obtained from the stem cells.

Methods of producing RPE cells

The present disclosure relates to methods for culturing human epidermal keratinocytes. When keratinocytes are cultured on plates coated with a laminin containing an alpha-4 chain or an alpha-5 chain, in a xeno-free, chemically defined cell culture medium, they expand efficiently in vitro. Useful cell culture kits for culturing keratinocytes are also described herein, as are methods of using such cells for treatment of burns or chronic wounds.

Methods for culturing human keratinocytes

The present disclosure describes methods of differentiating cardiomyocyte progenitor cells and mature cardiomyocyte cells from pluripotent stem cells. The methods may include differentiating pluripotent stems cells on a substrate including (i) laminin-511 or 521 and (ii) laminin 221. The mature cardiomyocyte cells produced by the method may form a human heart muscle cell line for use in regenerative cardiology.

Differentiation of pluripotent stem cells and cardiac progenitor cells into striated cardiomyocyte fibers using laminins LN-511, LN-521 and LN-221

Compositions and processes for culturing human stem cells in vitro in an undifferentiated state are disclosed. In this regard, human embryonic stem cells proliferated and maintained their pluripotency when cultured on plates coated with recombinant laminin-10 (laminin-511).

Composition and method for enabling proliferation of pluripotent human stem cells

The present disclosure related to isolated laminin-521, methods for making recombinant laminin-521, host cells that express recombinant laminin-521, and compositions containing laminin-521. Laminin-521 can maintain stem cells in vitro pluripotency, enable self-renewal, and enable single cell survival of human embryonic stem cells. When pluripotent human embryonic stem cells are cultured on plates coated with recombinant laminin-521 (laminin-11), in the absence of differentiation inhibitors or feeder cells, the embryonic stem cells proliferate and maintain their pluripotency. It has also been discovered that human recombinant laminin-521 (laminin-11) provides single cell survival of stem cells after complete dissociation into a single cell suspension. Useful cell culture mediums containing at most 3.9 ng/ml of beta fibroblast growth factor (bFGF) are also described herein.

Cell culture substrate comprising a laminin and a cadherin

Cell culture medium

The present disclosure relates to the use of laminin-521. Laminin-521 can maintain stem cells in vitro pluripotency, enable self-renewal, and enable single cell survival of human embryonic stem cells. When pluripotent human embryonic stem cells are cultured on plates coated with recombinant laminin-521 (laminin-11), in the absence of differentiation inhibitors or feeder cells, the embryonic stem cells proliferate and maintain their pluripotency. Methods of enhancing genetic diagnosis by expanding a single stem cell on laminin-521 prior to PCR amplification are disclosed herein.

Methods of enhancing genetic diagnosis

The present disclosure is related to methods for forming a stem cell bank. The methods include obtaining a first stem cell from a multi-cell fertilized embryo, expanding the first stem cell into two or more descendant stem cells, and storing at least one of the descendant stem cells to form the stem cell bank. Also disclosed is a kit that can be used for making the stem cell bank during in vitro fertilization. If desired, the HLA serotype of the stem cells can be determined prior to storage.

Stem cell bank

The present disclosure provides isolated laminin-421, methods for making recombinant laminin-421, and host cells that express recombinant laminin-421. The present disclosure also provides nucleic acid sequences encoding full length human laminin &#x3b2;2 chain, expression vectors and host cells thereof.

Isolated laminin-421

The present disclosure is directed to the development of compositions, such as extracellular matrices, and processes for using the same, that both maintain stem cells in vitro pluripotency and enable self-renewal. In this regard, it has been discovered that when pluripotent mouse and human embryonic stem cells are cultured on plates coated with recombinant laminin-10 (laminin-511) or their functional domains, in the absence of differentiation inhibitors or feeder cells, the embryonic stem cells proliferated and maintained their pluripotency.

Composition and method for enabling proliferation of pluripotent stem cells

The present disclosure is directed to the development of compositions, such as extracellular matrices, and processes for using the same, for culturing stem cells in vitro in an undifferentiated state. In this regard, it has been discovered that when pluripotent mouse and human embryonic stem cells are cultured on plates coated with recombinant laminin-10 (laminin-511) or laminin-5 (laminin-322), or their functional domains, the embryonic stem cells proliferated and maintained their pluripotency.

Growing community of inventors

Stockholm, Sweden

Karl Kristian Tryggvason